51252209554 has 32 divisors (see below), whose sum is σ = 94639216896. Its totient is φ = 20271366720.

The previous prime is 51252209461. The next prime is 51252209557. The reversal of 51252209554 is 45590225215.

It is not an unprimeable number, because it can be changed into a prime (51252209557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930739 + ... + 984265.

It is an arithmetic number, because the mean of its divisors is an integer number (2957475528).

Almost surely, 2^51252209554 is an apocalyptic number.

51252209554 is a deficient number, since it is larger than the sum of its proper divisors (43387007342).

51252209554 is a wasteful number, since it uses less digits than its factorization.

51252209554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58810.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 51252209554 in words is "fifty-one billion, two hundred fifty-two million, two hundred nine thousand, five hundred fifty-four".